在Oracle中，可以通過以下步驟來實現連接池和連接重用：
EXEC DBMS_CONNECTION_POOL.CREATE_POOL(pool_name => 'MY_CONNECTION_POOL', maxsize => 10, minsize => 2, incrsize => 1, session_state => 'ACTIVATED');
DECLARE
conn UTL_TCP.connection;
BEGIN
conn := DBMS_CONNECTION_POOL.ACQUIRE_CONNECTION(pool_name => 'MY_CONNECTION_POOL');
END;
DECLARE
conn UTL_TCP.connection;
BEGIN
conn := DBMS_CONNECTION_POOL.ACQUIRE_CONNECTION(pool_name => 'MY_CONNECTION_POOL');
-- 使用連接
...
DBMS_CONNECTION_POOL.RELEASE_CONNECTION(conn);
END;
通過以上步驟，可以在Oracle中實現連接池和連接重用，從而提高應用程序的性能和可伸縮性。
